Advertising is a form of selling.For thousands of years there have been individuals who have tried to (1) _____ others to buy the food they have produced or the goods they have made or the services they can (2) _____ But in the 19th century the mass production of goods (3) _____ the Industrial Revolution made person-to-person selling inefficient.The mass distribution of goods that (4) _____ the development of the railway and highway made person-to-person selling too slow and expensive.At the same time mass communication first newspapers and magazines then radio and television made mass selling through (5) _____ possible.

　　The objective of any advertisement is to convince people that it is in their best (6) _____ to take the action the advertiser is recommending.The action (7) _____ be to purchase a product, use a service, vote for a political candidate or even to join the Army.

　　Advertising as a (8) _____ developed first and most rapidly in the United States country that uses it to the greatest (9) _____ in 1980 advertising expenditures in the U.S.exceeded 55 billion dollars, or (10) _____ 2 percent of the gross national product.Canada spent about 2 percent of its gross national product on advertising.
____

A.amount

B.extent

C.possibility

D.utility